Anthrax’s “I’m Alive” has had a long road to the GRAMMYs. There song has gone through changes to the title and lyrics, the band went through three singers and the country has a different President than when the song was written.

Who’s the best hard rock band ever? It’s a subjective – and loaded – question. But according to a poll recently taken by BPI – the British Recording Industry’s trade group – Black Sabbath is the most important British hard rock band ever, followed by Iron Maiden.

A number of heavy metal legends weigh in on the collection: Iron Maiden takes on “Space Truckin’,” former Ozzy Osbourne guitarist Zakk Wylde and his Black Label Society cover “Pictures Of Home” and Metallica recorded the Machine Head B-side “When A Blind Man Cries.”